There are some subtleties here. One of my friends and I are both interested in camping and outdoor gear. This keeps causing YouTube to recommend videos on prepping and guns. Go ahead and block channels and select less of this and it sort of works for a while
But then it comes back with more. There are lots of prepping and guns channels. Maybe a pepper who talks about gardens gets highlighted or a gun thing that has a manufacturing complication or business hook comes up. There are many such channels, lots of content, and the connections are very strong, at least with YouTube recommendations.
He fixes up a lot of different type of vehicles and actually explains in detail what he is doing. A lot of car stuff is just people like do a dyno test of like suped up car, I don't find it very interesting. I end up just blocking those channels.
I really think that people are nitpicking a system that works reasonably well for the most part.